JP3206794U - Wet bulb gauze mounting jig - Google Patents

Abstract

An object of the present invention is to provide a mounting jig capable of easily mounting a wet bulb gauze on a temperature measuring body in a wet bulb thermometer in an environmental testing machine. A two-stage hollow cylindrical wet bulb gauze mounting jig 1 has a notch 10 and a recess 14 can be covered with a wet bulb gauze 12. A bag of a cylindrical wet bulb gauze 12 is provided. The wet bulb gauze mounting jig 1 is inserted into the mouth in advance, and the wet bulb gauze mounting jig 1 wets the wet bulb gauze 12 with a wide bag mouth on the temperature measuring body of the wet bulb thermometer in the test tank. The ball gauze 12 is attached. After attaching the wet bulb gauze 12 to the temperature measuring body of the wet bulb thermometer by the wet bulb gauze attaching jig 1, only the wet bulb gauze attaching jig 1 can be removed from the temperature measuring body through the notch 10. [Selection] Figure 1

Description

The present invention relates to a wet bulb gauze mounting jig for attaching a wet bulb gauze to a temperature measuring body of a wet bulb thermometer used in an environmental testing machine.

An environmental testing machine is a device that performs tests under test conditions that combine temperature, humidity, light irradiation, corrosive substances, etc., or a combination of them. It consists of a vessel, light source, corrosive substance inlet, control unit, wet and dry bulb thermometer, etc.

The dry and wet bulb thermometer is composed of a dry bulb thermometer and a wet bulb thermometer, and is installed in a test tank to measure temperature and relative humidity, which are one of the test conditions of the environmental test.

The wet bulb thermometer is composed of a temperature sensing element and a wet bulb gauze. A rod-shaped thermometer is inserted into one end of the cylindrical wet bulb gauze, and the other end of the wet bulb gauze is It is immersed in the water stored in the wet bulb pot. In the wet bulb gauze, water in the wet bulb pot is sucked up by a capillary phenomenon, and heat is taken away by evaporation of the water, so that the wet bulb gauze becomes lower in temperature than the surrounding atmosphere. The wet bulb thermometer measures the temperature lowered by the evaporation of the water as the wet bulb temperature by the temperature measuring body. On the other hand, a dry bulb thermometer measures the temperature of the surrounding atmosphere as a dry bulb temperature by a temperature measuring body. The relative humidity is calculated by a formula using the measured difference between the wet bulb temperature and the dry bulb temperature, the value of the atmospheric pressure, and the like.

When used for a long time, wet gauze deteriorates in water absorption capacity due to adhesion of impurities in the water and deterioration factors during environmental testing, and deterioration over time due to repeated temperature and humidity changes during environmental testing. Since the temperature may not be measured, it needs to be replaced as appropriate. In particular, environmental test machines are often used in harsh environments, and the replacement frequency may be high because the deterioration of wet bulb gauze is promoted.

In an environmental testing machine, a device has been devised to simplify the installation of wet bulb gauze. For example, Patent Document 1 describes that a wet bulb thermometer can be provided with a moving mechanism, pulled out from the back of the tank toward the tank opening, and attached to the wet bulb gauze at hand.

JP-A-5-26829

In environmental testing machines, wet bulb thermometers are often installed at the back of the test tank (the back of the tank) together with the dry bulb thermometer, and the wet bulb thermometer is wetted from the tank opening provided on the front side of the test tank. The gauze was being replaced. However, because there is a distance between the tank opening and the wet bulb thermometer, the operator who conducts the environmental test cannot attach the wet bulb gauze to the temperature sensor at hand, It was necessary to stretch out and attach a wet bulb gauze to the thermometer by hand. Further, in order to measure the accurate wet bulb temperature, the wet bulb gauze has to be attached so that the outer diameter of the temperature measuring element and the inner diameter of the wet bulb gauze are substantially equal and there is no gap between the two members. For this purpose, it is necessary to insert the wet bulb gauze into the temperature measuring element while keeping the bag mouth of the expanding and contracting wet bulb gauze open. It was difficult.

In addition, in order to accurately measure the wet bulb temperature in an environmental testing machine, it is necessary to install a wet bulb thermometer at a certain wind speed. Is often placed. Furthermore, in an environmental testing machine in which a light source is mounted in a test tank, a light shielding plate is installed around the wet bulb thermometer to prevent the influence of radiation from the light source. These were also factors that made it difficult to install wet bulb gauze.

In addition, the wet bulb thermometer is provided with a moving mechanism, so that the wet bulb thermometer itself is moved from the back of the tank to the vicinity of the tank opening, and the wet bulb gauze is placed on the temperature measuring body of the wet bulb thermometer by the operator. Although there is a technology that makes it possible to attach the device, there is a case in which the moving mechanism cannot be provided because the structure of the device around the wet bulb thermometer is complicated. Further, when the moving mechanism is provided in the wet bulb thermometer, the structure of the moving mechanism itself is complicated, and there is a risk that the cost may be increased. In addition, there are various loading factors such as environmental conditions such as high temperature and high humidity, sprayed corrosive substances, or light radiation containing many ultraviolet components in the test chamber of the environmental testing machine under test. It is a harsh environment. Therefore, there is a possibility that the moving mechanism may break down due to these loads, and the work may become more complicated, such as periodic cleaning is necessary to remove the sticking substances such as corrosive substances adhered during the test. there were.

  The present invention has been made in view of such problems, and its purpose is to allow a wet bulb gauze to be easily attached to a temperature measuring body of a wet bulb thermometer provided in a test tank of an environmental test machine. The object is to provide a mounting jig at a low cost.

The wet bulb gauze mounting jig of the present invention has a two-stage hollow cylindrical shape, and the hollow portion at the center of the hollow cylindrical shape has a diameter into which a temperature measuring body of a wet bulb thermometer can be inserted, and the hollow cylindrical shape It is set as the structure which has the notch penetrated to a radial direction from the outer peripheral surface of this to the said hollow part. Thereby, it is possible to attach a cylindrical wet bulb gauze to the two-stage recess, and when the wet bulb gauze is attached to the temperature measuring body, the temperature measuring body of the wet bulb thermometer is obtained by the cutting. It becomes possible to remove only the wet bulb gauze mounting jig.

As the wet bulb gauze mounting jig, it is preferable that the two-stage convex portion further has a hole that is parallel to the tangential direction of the convex portion and does not penetrate the hollow portion. In this case, a string-like member may be passed through the hole.

According to the wet bulb gauze mounting jig of the present invention, the wet bulb gauze mounting jig is inserted in advance into the cylindrical wet bulb gauze bag mouth, and the wet bulb gauze mounting jig is used to Since the wet bulb gauze can be attached to the temperature sensing element in the test tank in the expanded state, the wet bulb gauze attaching operation becomes simple. Since the wet bulb gauze mounting jig has a notch, it is possible to easily remove only the wet bulb gauze mounting jig from the thermometer after attaching the wet bulb gauze mounting jig and the wet bulb gauze to the temperature measuring body. Since the wet bulb gauze mounting jig is attached and the test is not required, the wet bulb temperature measurement during the test is not affected.
In addition, since the string-like member can be attached to the hole of the two-stage convex part, it is possible to attach the wet bulb gauze to the temperature measuring element in the test tank while passing the arm through the string-like member. The possibility of the wet bulb gauze mounting jig and the wet bulb gauze falling into the test tank can be reduced.
Therefore, it is possible to attach the wet bulb gauze at a low cost with a simple structure without providing a complicated mechanism such as a moving mechanism in the wet bulb thermometer.

It is a figure of the wet bulb gauze attachment jig of the present invention. It is the figure which attached wet bulb gauze to the temperature sensing element using the wet bulb gauze attachment jig of the present invention. It is a figure showing the state which grasped the wet bulb gauze attachment jig. It is the schematic of the environmental testing machine provided with the wet and wet bulb thermometer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Embodiment]
FIG. 1 shows a wet bulb gauze mounting jig 1 according to the present invention, where (a) is a side view, (b) is a front view, and (c) is a view with a wet bulb gauze 12 inserted.

The wet bulb gauze mounting jig 1 has a two-stage hollow cylindrical shape, has a convex portion 13, a concave portion 14, and a hollow portion 15, and has a notch 10 that penetrates from the outer peripheral surface of the hollow cylindrical shape to the hollow portion 15 in the radial direction. Have.
The two-step concave portion 14 (small diameter portion) has an outer diameter and a length allowing the wet bulb gauze 12 to be attached, and the two-step convex portion 13 (large diameter portion) includes: The chain hole 11 is parallel to the tangential direction of the convex portion 13 and does not penetrate the hollow portion 15. The chain hole 11 allows a commercially available chain 22 to be attached as a string-like member. In this embodiment, a metal chain is used as the string-like member. However, the member may be not only a chain but also a string made of a sufficiently strong fiber or leather.

The hollow portion 15 has a diameter into which the temperature measuring body 20 of the wet bulb thermometer 2 can be inserted, and the notch 10 has a width that allows the temperature measuring body 20 to be removed from the radial direction of the hollow portion 15.

FIG. 2 is a view in which the wet bulb gauze 12 is attached to the temperature measuring body 20 using the wet bulb gauze attaching jig 1 of the present invention. The wet bulb thermometer 2 includes a temperature measuring body 20, a wet bulb gauze 12, and a wet bulb pot 21.

The wet bulb gauze 12 is attached to the concave portion 14 of the wet bulb gauze mounting jig 1, and the temperature measuring body 20 is inserted into the hollow portion 15 in the direction of the convex portion 13.

FIG. 3 is a view showing a state where the wet bulb gauze mounting jig 1 is gripped.

The arm 23 is passed through the chain 22 passed through the chain hole 11 of the wet bulb gauze mounting jig 1 to grip the wet bulb gauze mounting jig 1.

FIG. 4 is an example of an environmental test machine 3 equipped with a wet and dry bulb thermometer. The environmental testing machine 3 includes a test tank door 30, a test tank 31, a sample 32, a sprayer 33, a wet bulb thermometer 2, a dry bulb thermometer 34, a temperature control tank 35, and a vent hole 36.

The environmental testing machine 3 has a test chamber door 30 which is an exchange port for members such as the sample 32 and the wet bulb gauze 12 on the front surface. The sample 32 is placed in the test chamber 31 and the inner part of the test chamber 31 The corrosive substance sprayed by the sprayer 33 provided in the center is allowed to act on the sample 32. The temperature control tank 35 is provided adjacent to the test tank 31 across a wall, and includes a heater, a cooler, and a humidifier (not shown) inside, and communicates with the test tank 31 through the vent 36. A wet bulb thermometer 2 and a dry bulb thermometer 34 are provided on the left side of the inner part of the test tank 31, and the temperature is adjusted based on temperature and humidity data obtained by the wet bulb thermometer 2 and the dry bulb thermometer 34. The temperature and humidity in the test tank 31 are controlled by adjusting the air to a predetermined temperature and humidity by the tank 35 and introducing the air into the test tank 31 through the vent 36.

[Operation and effect of wet bulb gauze mounting jig 1]
Thus, since the wet bulb gauze mounting jig 1 of the present invention has a two-stage hollow cylindrical shape, the recess 14 of the wet bulb gauze mounting jig 1 is provided in advance in the bag mouth of the cylindrical wet bulb gauze 12. Since the wet bulb gauze 12 can be attached to the temperature measuring body 20 in the test tank 31 with the wet bulb gauze attachment jig 1 in a state where the bag mouth of the wet bulb gauze 12 is wide with the wet bulb gauze attachment jig 1 as it is, the installation work becomes simple. .

Moreover, since it has the notch | incision 10, after attaching the wet bulb gauze attachment jig 1 and the wet bulb gauze 12 to the temperature measuring body 20 in the test tank 31, the wet bulb gauze attachment jig 1 from the temperature measurement body 20 is provided. By pulling out the wet bulb gauze mounting jig 1 in the radial direction, it is possible to remove only the wet bulb gauze mounting jig 1 while the wet bulb gauze 12 is attached to the temperature measuring body 20, Since it is not necessary to perform the test while the wet bulb gauze mounting jig 1 is attached, the wet bulb temperature measurement at the time of the test is not affected.

Further, since the string-like member such as the chain 22 can be attached by providing the chain hole 11, the operation of attaching the wet bulb gauze 12 to the temperature measuring body 20 in the test tank 31 with the chain 22 being passed through the arm 23. Therefore, it is possible to reduce the risk of the wet bulb gauze mounting jig 1 and the wet bulb gauze 12 falling into the test tank 31 during the mounting operation.

Although the present invention has been described with reference to the embodiment, the shape and the like described in the above embodiment are merely examples, and the present invention is not limited to the above embodiment. The examples are not limited to spray corrosion testers, but may be used in weathering testers and the like.

  DESCRIPTION OF SYMBOLS 1 ... Wet bulb gauze mounting jig, 10 ... Incision, 11 ... Chain hole, 12 ... Wet bulb gauze, 13 ... Convex part, 14 ... Concave part, 15 ... Hollow part, 2 ... Wet bulb thermometer, 20 ... Thermometer 21 ... Wet bulb pot, 22 ... Chain, 23 ... Arm, 3 ... Environmental test machine, 30 ... Test chamber door, 31 ... Test chamber, 32 ... Sample, 33 ... Sprayer, 34 ... Dry bulb thermometer, 35 ... Adjustment Hot bath, 36 ... Ventilation opening.

Claims (2)

A two-stage hollow cylindrical shape that allows a thermometer of a wet bulb thermometer to be inserted into the hollow portion at the center of the hollow cylindrical shape and penetrates radially from the outer peripheral surface of the hollow cylindrical shape to the hollow portion. A wet bulb gauze mounting jig for a wet bulb thermometer of an environmental testing machine, characterized in that a cylindrical wet bulb gauze can be attached to the two-stage recess.
2. The wet bulb gauze mounting jig for wet bulb thermometer according to claim 1, further comprising a hole that is parallel to a tangential direction of the two-stage convex portion and does not penetrate the hollow portion.

Images